If it is a sometimes problem, then it is not a port open problem. Check with your ISP for current DNS servers to use as forwarders. (PacBell has been known to change them without letting people know.) John Tolmachoff IT Manager, Network Engineer RelianceSoft, Inc. Fullerton, CA 92835 www.reliancesoft.com -----Original Message----- From: Rob [mailto:rob@xxxxxxxxxxxxxxxxxx] Sent: Monday, August 12, 2002 5:28 AM To: [ISAserver.org Discussion List] Subject: [isalist] DNS forwarders problems http://www.ISAserver.org I configured my network so i rely on my internal dns servers, wich i configured to use forwarders of my isp. Sometimes with no reason browsing to sites is very slow or are unable to display the site. My isa server is behind a router, i think i must configure the router to open port 53 to my isaserver, but i am not sure. How has a answer for me?? Greetings Rob ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: isalist@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')